Cisco IOS Software Checker

Security Intelligence Operations (SIO) Portal:

<http://cisco.com/security>

Cisco IOS Software Checker:

<http://tools.cisco.com/security/center/selectIOSVersion.x>

"Use the Cisco IOS Software Checker tool to search for Cisco Security Advisories that address specific Cisco IOS Software releases. Simply select a release from the drop-down menu, paste in show version command output, or upload a file from your local system."